NGC 6388

NGC 6388 is a globular cluster located in the constellation Scorpius. The cluster was discovered by Scottish astronomer James Dunlop on May 13, 1826 using a 22.86 cm (9 in) reflector telescope. Due to its moderate apparent magnitude (+6.72), a telescope is required to see it.

NGC 6388
Credit: MPG/ESO telescope
Observation data (J2000 epoch)
Class	III[1][2]
Constellation	Scorpius[2]
Right ascension	17^h 36^m 17.461^s[3][4]
Declination	−44° 44′ 08.34″[3][4]
Distance	32.3 kilolight-years (10 kiloparsecs)[2]
Apparent magnitude (V)	6.72[2]
Apparent dimensions (V)	6.2 arcmins[2]
Physical characteristics
Mass	2.17×10^6[5] M☉
Tidal radius	6.21 arcmins[6]
VHB	16.85[6]
Metallicity	${\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}$ = -0.55[6] dex

Gallery

• 
  NGC 6388 taken from the HST.
• 
  Globular cluster NGC 6388, by HST.

References

1. Shapley, Harlow; Sawyer, Helen B. (August 1927). "A Classification of Globular Clusters". Harvard College Observatory Bulletin. 849 (849): 11–14. Bibcode:1927BHarO.849...11S.
2. "Students for the Exploration and Development of Space (NCG 6388)". Retrieved 26 September 2015.
3. "NGC 6388". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 27 September 2015.
4. "NASA/IPAC Extragalactic Database (NGC 6388)". Retrieved 27 September 2015.
5. Boyles, J.; et al. (November 2011), "Young Radio Pulsars in Galactic Globular Clusters", The Astrophysical Journal, 742 (1): 51, arXiv:1108.4402, Bibcode:2011ApJ...742...51B, doi:10.1088/0004-637X/742/1/51.
6. "Galactic Globular Clusters Database (NCG 6388)". Retrieved 26 September 2015.

External links

• Media related to NGC 6388 at Wikimedia Commons